아카이브로부터 생성, 수정, 추출 (.a, .so, .o).
ar -x {{libfoo.a}}
ar -t {{libfoo.a}}
ar -r {{libfoo.a}} {{foo.o}} {{bar.o}} {{baz.o}}
ranlib
ar -s {{libfoo.a}}
ar -rs {{libfoo.a}} {{foo.o}} {{bar.o}} {{baz.o}}